You can try out the new mobile version of Twitter, which works best on Webkit browsers, by visiting http://mobile.twitter.com/ on your mobile device. Since it's a preview, the new mobile interface will not replace the m.twitter.com experience for the time being, but you can look for that switch to happen in the coming months.
If you're wondering why Twitter was compelled to redo their mobile site after years of silence, look no further their blog post on the subject. Leland Rechis of the User Experience team writes:
"What may be a less known fact is: Lots of people access Twitter on their phones via our good ol’ mobile website, and trusty ‘m’ has been delivering tweets faithfully. However, ‘m’ doesn’t fully feel like Twitter, and could probably do a bit more things for you.
‘M’ should also be fantastically innovative — naturally the best way to do that is use our own APIs. So, the mobile team here built a brand new mobile web client from scratch, using only Twitter APIs, and we'd like to share the results with you."
Take a look at the new mobile version of Twitter below.
